An Official Website of the United States Government

Medicare Prescription Drug Benefit (Part D)

Department of Health and Human Services

Medicare Prescription Drug Benefit (Medicare Part D) is a federal prescription drug benefit program for Medicare beneficiaries.

Agency Accountable Official: Ellen Murray, Assistant Secretary for Financial Resources

Program Accountable Official: Shantanu Agrawal, M.D., Deputy Administrator and Director for the Center for Program Integrity, Centers for Medicare & Medicaid Services



Total Payments (Outlays)more info


Improper Paymentsmore info


Improper Payment Ratemore info


3.1% Improper Payment Rate Target more info

All amounts are in billions of dollars

Tabular view for Projected improper payments Tabular View   

Program Comments

In Fiscal Year (FY) 2015, HHS reported a composite error estimate for the Medicare Prescription Drug Program (Part D), based on Calendar Year 2013 payments. The FY 2015 Part D composite payment error rate combines four component payment error measures: the Payment Error Related to Low Income Subsidy Status (PELS); the Payment Error Related to Incorrect Medicaid Status (PEMS); the Payment Error Related to Prescription Drug Event Data Validation (PEPV); and the Payment Error Related to Direct and Indirect Remuneration (PEDIR). More information on this program can be found in the Department's Agency Financial Report (available at